CA1131813A - Marine sewage disposal - Google Patents
Marine sewage disposalInfo
- Publication number
- CA1131813A CA1131813A CA351,571A CA351571A CA1131813A CA 1131813 A CA1131813 A CA 1131813A CA 351571 A CA351571 A CA 351571A CA 1131813 A CA1131813 A CA 1131813A
- Authority
- CA
- Canada
- Prior art keywords
- settling tank
- aeration chamber
- pond
- chamber
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1242—Small compact installations for use in homes, apartment blocks, hotels or the like
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/22—Activated sludge processes using circulation pipes
- C02F3/223—Activated sludge processes using circulation pipes using "air-lift"
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/008—Originating from marine vessels, ships and boats, e.g. bilge water or ballast water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Activated Sludge Processes (AREA)
- Treatment Of Biological Wastes In General (AREA)
- Removal Of Floating Material (AREA)
- Cleaning Or Clearing Of The Surface Of Open Water (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
MARINE SEWAGE DISPOSAL
Abstract An activated sludge marine sewage disposal apparatus includes an aeration chamber immediately adjacent to a flooded settling tank, rising above a disinfectant chamber and a holding chamber disposed around the lower part of the tank. Flow from the aeration chamber to the settling tank is through a port in the common wall between the aeration chamber and settling tank, and up inside a pond separated from the rest of the tank by a downwardly flaring baffle or skirt depending from the top of the tank. A single skimmer at the center of the area at the top of the pond picks up floating solids and returns them to the top of the aeration chamber. A vent disposed directly over the skimmer continuously draws off air and gas to the aeration chamber. A sludge return line picks up heavy solids from the bottom of the tank and returns them to the top of the aeration chamber through a riser located in the aeration chamber Liquid in the settling tank flows out through a submerged perforated pipe into a standpipe in the aeration chamber, which is located centrally in the aeration chamber and overflows through an inverted-U tube, vented to the aeration chamber, the tube connecting to a downcomer sending the liquid back through the common wall to the disinfectant compartment.
When sufficient volume of fluid accumulates in the disinfectant compartment, it overflows into a holding tank, from which it emerges via a port.
Abstract An activated sludge marine sewage disposal apparatus includes an aeration chamber immediately adjacent to a flooded settling tank, rising above a disinfectant chamber and a holding chamber disposed around the lower part of the tank. Flow from the aeration chamber to the settling tank is through a port in the common wall between the aeration chamber and settling tank, and up inside a pond separated from the rest of the tank by a downwardly flaring baffle or skirt depending from the top of the tank. A single skimmer at the center of the area at the top of the pond picks up floating solids and returns them to the top of the aeration chamber. A vent disposed directly over the skimmer continuously draws off air and gas to the aeration chamber. A sludge return line picks up heavy solids from the bottom of the tank and returns them to the top of the aeration chamber through a riser located in the aeration chamber Liquid in the settling tank flows out through a submerged perforated pipe into a standpipe in the aeration chamber, which is located centrally in the aeration chamber and overflows through an inverted-U tube, vented to the aeration chamber, the tube connecting to a downcomer sending the liquid back through the common wall to the disinfectant compartment.
When sufficient volume of fluid accumulates in the disinfectant compartment, it overflows into a holding tank, from which it emerges via a port.
Description
~L~3~8~3 Background of the Invention _ _ _ This invention re].ates to an activated slud~e sewage disposal system and more particularly to such a system specially adapted for marine user Problems encountered with prior art equipment include surging of fluid from the aeration chamber to -the settling tank when displacement of fluid in the aeration cham~er increases the head of fluid at the standpipe, Such surging may occur when the ship rolls or pitches or both~ depending on the location of the sewage disposal apparatus relative to tIle ship~ Surging will tend to carry unmacerated solids into the pond in t~e settling tank, overloading the skimmer and sludge return~
In the apparatus of the prior art, although manually controlled valve means in the top of the settling tank enables all the air in the top of the tank to ~e vented to atmosphere when the apparatus is first started up and the tank is flooded with effluent from the aeration chamber~ during normal operation of the apparatus any gas entrained ~y t~e effluent will collect at the top of the pond in the top of the~settling tan~ The gas may increase in volume to the po.int where the gas~effluent inter-face is below the level of the skimmers, rendering the skimmers inactive~ EYen ~ithout lowering of the interface to such an extreme degree~ gas at the -top of the pond will tend to con- -centrate over the top of each s~immer~and reduce its efficiency.
A further problem with the skimmers of the prior art is the presence of dead areas at -the top of the pond where the skimmer action is ineffective to create surface movement sufficent to draw in floating sludge to the skimmer outlet, resulting in the buildup of sludge cake in the top of the pond which ultimately may block the skimmer means from functioning.
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In the apparatus of the prior art, although manually controlled valve means in the top of the settling tank enables all the air in the top of the tank to ~e vented to atmosphere when the apparatus is first started up and the tank is flooded with effluent from the aeration chamber~ during normal operation of the apparatus any gas entrained ~y t~e effluent will collect at the top of the pond in the top of the~settling tan~ The gas may increase in volume to the po.int where the gas~effluent inter-face is below the level of the skimmers, rendering the skimmers inactive~ EYen ~ithout lowering of the interface to such an extreme degree~ gas at the -top of the pond will tend to con- -centrate over the top of each s~immer~and reduce its efficiency.
A further problem with the skimmers of the prior art is the presence of dead areas at -the top of the pond where the skimmer action is ineffective to create surface movement sufficent to draw in floating sludge to the skimmer outlet, resulting in the buildup of sludge cake in the top of the pond which ultimately may block the skimmer means from functioning.
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2, Summary o the Inventi_ Accordi~g to the invention, the foregoing difEiculties are overcome by placing the standpipe in the center of the aeration chamber so that the head on the standpipe will remain constant despite rolling and pitching of the ship, or other action causing change in the inclination o the aeration chamber.
Vent means, continuously open to the aeration . chamber, is disposed immediately over the top of the skimming means, thereby to prevent accumulation of gas;in :
the top of the pond above the skimmer.
The risers or the heavy sludge pickup and for the skimmer return lines are eliminated rom the area of the settling tank pond, being placed in the aeration chamber.
: The top of the pond is reduced in cross-sectional area and a single skimmer outlet is centrally disposed thereon.
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For a detailed description of a preferred embodiment of the i.nvention, re~erence will now be made to the accompanying drawings wherein:
Figure l is medial vertical section through apparatus embodying the invention;
Figure 2 is a horizontal section taken approximately at plane 2-2 of Figure 1, Figure 3 is a hack view,. partly in section of the appara-tus shown in Figures 1~3;
Figure 4 is a vertical section taken on plane 4-4 of Figure 2;
Figure 5 is a transverse vertical section taken at plane 5-5 of Figure 2~
The drawings are to scale, the height of the equipment shown in Figure 1 being of the order of six feet. :
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': . - . ' ~3~ L3 Description of Preferred Embodiment Referring now to Figures l and 2, there is shown an apparatus for use in the activated sludge process of sewage disposal comprising an aeration chamber ll having S generally the shape of a rectangular parallel piped with a bottom 13, top 15, front 17, sides l9 and 21, and a back wall 34~ Adjacent the bottom are front and back inclined walls 25, 27~
Adjacent to the rear of the aeration chamber is a clarifier or settling tank 31 of rectangular horizontal cross section having a back wall 33 and side`walls 35, 37.
The front wall of the settling tank is back wall 23 of the aeration chamber, thus being a common wall. Tank 31 has a sealed top 39, a bottom 41 of smaller size than the top, and inclined side, back and front walls 43, 45, 41j 49 (see also Figure 3).
Adjacent the sloping side walls 43, 45 and under-neath the upper portion of the settling tank are disinfectant compartment 51 and holding compartment 53~ having bottom walls 55, 57, side walls 59, 61, with a weir 63 between the compartments.
Referring once more to Figures l and 2, within the settling tank and depending from its top is a skirt, forming a pond 71. The upper part of the skirt has the configuration of a truncated rectangular pyramid, with three top walls 73, 75, 77, having an inclination of at least 45 degrees to the vertical, joining common wall 23 at the front of the~pond.
Depending from the top walls are three vertical side walls 79 r 81, 83 (see Figure 3) cooperating with common wall 23 to complete the lower part of the skirt. There is thus formed a downwardly flaring skirt or baffle means providing a pond whose horizontal cross~section is smaller at its top than its bottom.
The aeration chamber is provided with a sewage inlet 9l (Figure 2) and the holding compartment is provided ~3~3 s.
with ~ clear liquid outlet 93. Air is admitted to the bottom of -the aeration chamber through diffuser ~5 supplied by air line 97 supplied with air from an external source (not shown). ~he air macerates the solids in the sewage and increases the activity o bacteria in the sewage which break down the solids.
Effluent from the aeration tank passes through common wall 23 via port 99. rrhe port is protected by baffle 101 from the entrance of solids not broken down in the aeration chamber. The effluent initially entering the settling tank is within skir-ted pond 71. Any dense solids ~ -that may have entered throu~h port 99 will have an opportunity to fall out of the effluent to the bottom of the settling tank. ~ -Sludge accumulating in the bottom of the settling tank is removed by sludge pickup pipe 103~ Pickup pipe 103 is connected to riser 105 in the aeration chamber by cross-over pipe 107 passing through common wall 23. The sludge is air-lifted by air injected into the riser by air line 109 and is discharged into the top of the aeration chamber by sludge return pipe 111. Pipe 111 discharges~above~normal sewage level 113.
Low density ~uoyant solids float to the top of pond 71 adjacent skirNmer outlet 115. Inle~ 115 is at the upper end of pipe 11?, the lower end of which is connected by cross-over pipe 119 passing through cor~mon wall 23 to thP lower end of riser 121 in the aeration chamber. Slush is air lifted in riser 121 by air admitted from air line 123. Riser 121 is connected at its upper end to slush return pipe 125. Return pipe 125 discharges into the top of the aeration char~ber above normal sewage level 113.
Directly over the top ofskimmer inlet 115 is an external vent pipe 127 which is connected by gas return line 131, also external to the rest of the apparatus, to the top of the settling tank, above sewage level 113.
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, L8~3 It will -thereEore be seen -that the only piping in pond 71 i5 that associated with the skimmer. With but a centrally located single skimmer in a pond of unobstruc-ted small top surface area, the skimmer is above to develop enough surface flow to remove substant:ially all slush from the top of the pond, reducing or eliminating the accumulation of slush cake which would interface wlth slush flow. The vent above the skimmer, always open to the aeratlon chamber, continuously removes gas, preventing formation of a gas bubble that could interfere with slush flow.
Although the top of pond 71 is pinched in to be close around the skimmer and eliminate dead spots where there would be no flow induced by the skimmer, the lower part of the pond is of a larger cross section, preventing~high velocity flow up into the pond from port 99. Such high velocity flow might cause turbulence and interfere with solids separation in the settling tank.
Referring now particularly to Figures 2, 4, 5, liquid is withdrawn from the settling tank thxough a perforated pipe 141, 143, 145 providing a diffuse outlet in the top of the settling; tank. The diffuse outle-t or perforated pipe in the s~ttling tank is connected by cross-over pipe 147, extending~through common wall 23, with lateral, horizontal pipe 149 in the aeration chamber. Pipe 149 connects to transverse horizontal pipe 151 which is connected to the lower end of standpipe 153. Standpipe 153 determines the level of sewage 113 in the aeration chamher.
When the sewage level rises above normal level 113, which is the height of the top of standpipe 153, the sludge flows in-to the settling tank and then overfIows standpipe 153 via elbows 155, 157 into downcomer 159. The lower end of downcomer 159 is connected by transverse horizontal pipe 161 to lateral horizontal pipe 163 which discharges via port 165 in common wall 23 into chlorination compartment 51 (see Figure 4~. To prevent slphoniny, the ~op ~f the inverted U tube f~rm-d by :
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elbows 155, 157 is vented to the aeration chamber by vent pipe 167. The aeration chamber is vented to atmosphere (constantly or under control of a manual valve not shown) through pipe 169 (Figure 1).
Referring to Figure 5, the poink of connection between elbows 155~ 157 actually defines the highest point liquid can rise from standpipe 159 before overflowing, and hence defines the sewage level 113 in the aeration chamber. This point of connection, coincident with vent pipe 167 (refer now to Figure 2) is located at the center of the liquid surface of the sewage in the aeration chamber, Therefore, inclination of the chamber will not affect the level at the point of connection~ and rolling ;~
and pitching of the ship or other vessel carrying the sewage disposal apparatus will not cause surging, i.~e. alternate cessation offlow through port 99 followed by excessive flow and consequent carry-through of unmacerated, undigested solids from the aeration chamber into the settling tank and premature flow from the settling tank into the chlorination compartment~
Sodium hypochloriate is fed into the disinfectant com-partment by an injection pump 171 in sufficient quantity in relation to the volume of the compartment to provide ~or x minutes of chlorine concentration of the desired value, e~g~ y ppm, even when flow is z times average rate~ The values of x, y and z are chosen to assure destruction of most pathogenic life forms in the liquid effluent~
When liquid in disinfectant compartment 51 (see ~ig-ure 2) reaches the level of weir 63, the liquid overflows into holding compartment 53, The treated liquid is withdraw~ via outlet 93 by gravity or by a pump (no-t shown~.
While a preferred embodiment of the invention has been shown and descrihed, modifications thereof can be made by one skilled in the art without departing from the spirit of the invention~
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Vent means, continuously open to the aeration . chamber, is disposed immediately over the top of the skimming means, thereby to prevent accumulation of gas;in :
the top of the pond above the skimmer.
The risers or the heavy sludge pickup and for the skimmer return lines are eliminated rom the area of the settling tank pond, being placed in the aeration chamber.
: The top of the pond is reduced in cross-sectional area and a single skimmer outlet is centrally disposed thereon.
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For a detailed description of a preferred embodiment of the i.nvention, re~erence will now be made to the accompanying drawings wherein:
Figure l is medial vertical section through apparatus embodying the invention;
Figure 2 is a horizontal section taken approximately at plane 2-2 of Figure 1, Figure 3 is a hack view,. partly in section of the appara-tus shown in Figures 1~3;
Figure 4 is a vertical section taken on plane 4-4 of Figure 2;
Figure 5 is a transverse vertical section taken at plane 5-5 of Figure 2~
The drawings are to scale, the height of the equipment shown in Figure 1 being of the order of six feet. :
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': . - . ' ~3~ L3 Description of Preferred Embodiment Referring now to Figures l and 2, there is shown an apparatus for use in the activated sludge process of sewage disposal comprising an aeration chamber ll having S generally the shape of a rectangular parallel piped with a bottom 13, top 15, front 17, sides l9 and 21, and a back wall 34~ Adjacent the bottom are front and back inclined walls 25, 27~
Adjacent to the rear of the aeration chamber is a clarifier or settling tank 31 of rectangular horizontal cross section having a back wall 33 and side`walls 35, 37.
The front wall of the settling tank is back wall 23 of the aeration chamber, thus being a common wall. Tank 31 has a sealed top 39, a bottom 41 of smaller size than the top, and inclined side, back and front walls 43, 45, 41j 49 (see also Figure 3).
Adjacent the sloping side walls 43, 45 and under-neath the upper portion of the settling tank are disinfectant compartment 51 and holding compartment 53~ having bottom walls 55, 57, side walls 59, 61, with a weir 63 between the compartments.
Referring once more to Figures l and 2, within the settling tank and depending from its top is a skirt, forming a pond 71. The upper part of the skirt has the configuration of a truncated rectangular pyramid, with three top walls 73, 75, 77, having an inclination of at least 45 degrees to the vertical, joining common wall 23 at the front of the~pond.
Depending from the top walls are three vertical side walls 79 r 81, 83 (see Figure 3) cooperating with common wall 23 to complete the lower part of the skirt. There is thus formed a downwardly flaring skirt or baffle means providing a pond whose horizontal cross~section is smaller at its top than its bottom.
The aeration chamber is provided with a sewage inlet 9l (Figure 2) and the holding compartment is provided ~3~3 s.
with ~ clear liquid outlet 93. Air is admitted to the bottom of -the aeration chamber through diffuser ~5 supplied by air line 97 supplied with air from an external source (not shown). ~he air macerates the solids in the sewage and increases the activity o bacteria in the sewage which break down the solids.
Effluent from the aeration tank passes through common wall 23 via port 99. rrhe port is protected by baffle 101 from the entrance of solids not broken down in the aeration chamber. The effluent initially entering the settling tank is within skir-ted pond 71. Any dense solids ~ -that may have entered throu~h port 99 will have an opportunity to fall out of the effluent to the bottom of the settling tank. ~ -Sludge accumulating in the bottom of the settling tank is removed by sludge pickup pipe 103~ Pickup pipe 103 is connected to riser 105 in the aeration chamber by cross-over pipe 107 passing through common wall 23. The sludge is air-lifted by air injected into the riser by air line 109 and is discharged into the top of the aeration chamber by sludge return pipe 111. Pipe 111 discharges~above~normal sewage level 113.
Low density ~uoyant solids float to the top of pond 71 adjacent skirNmer outlet 115. Inle~ 115 is at the upper end of pipe 11?, the lower end of which is connected by cross-over pipe 119 passing through cor~mon wall 23 to thP lower end of riser 121 in the aeration chamber. Slush is air lifted in riser 121 by air admitted from air line 123. Riser 121 is connected at its upper end to slush return pipe 125. Return pipe 125 discharges into the top of the aeration char~ber above normal sewage level 113.
Directly over the top ofskimmer inlet 115 is an external vent pipe 127 which is connected by gas return line 131, also external to the rest of the apparatus, to the top of the settling tank, above sewage level 113.
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, L8~3 It will -thereEore be seen -that the only piping in pond 71 i5 that associated with the skimmer. With but a centrally located single skimmer in a pond of unobstruc-ted small top surface area, the skimmer is above to develop enough surface flow to remove substant:ially all slush from the top of the pond, reducing or eliminating the accumulation of slush cake which would interface wlth slush flow. The vent above the skimmer, always open to the aeratlon chamber, continuously removes gas, preventing formation of a gas bubble that could interfere with slush flow.
Although the top of pond 71 is pinched in to be close around the skimmer and eliminate dead spots where there would be no flow induced by the skimmer, the lower part of the pond is of a larger cross section, preventing~high velocity flow up into the pond from port 99. Such high velocity flow might cause turbulence and interfere with solids separation in the settling tank.
Referring now particularly to Figures 2, 4, 5, liquid is withdrawn from the settling tank thxough a perforated pipe 141, 143, 145 providing a diffuse outlet in the top of the settling; tank. The diffuse outle-t or perforated pipe in the s~ttling tank is connected by cross-over pipe 147, extending~through common wall 23, with lateral, horizontal pipe 149 in the aeration chamber. Pipe 149 connects to transverse horizontal pipe 151 which is connected to the lower end of standpipe 153. Standpipe 153 determines the level of sewage 113 in the aeration chamher.
When the sewage level rises above normal level 113, which is the height of the top of standpipe 153, the sludge flows in-to the settling tank and then overfIows standpipe 153 via elbows 155, 157 into downcomer 159. The lower end of downcomer 159 is connected by transverse horizontal pipe 161 to lateral horizontal pipe 163 which discharges via port 165 in common wall 23 into chlorination compartment 51 (see Figure 4~. To prevent slphoniny, the ~op ~f the inverted U tube f~rm-d by :
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elbows 155, 157 is vented to the aeration chamber by vent pipe 167. The aeration chamber is vented to atmosphere (constantly or under control of a manual valve not shown) through pipe 169 (Figure 1).
Referring to Figure 5, the poink of connection between elbows 155~ 157 actually defines the highest point liquid can rise from standpipe 159 before overflowing, and hence defines the sewage level 113 in the aeration chamber. This point of connection, coincident with vent pipe 167 (refer now to Figure 2) is located at the center of the liquid surface of the sewage in the aeration chamber, Therefore, inclination of the chamber will not affect the level at the point of connection~ and rolling ;~
and pitching of the ship or other vessel carrying the sewage disposal apparatus will not cause surging, i.~e. alternate cessation offlow through port 99 followed by excessive flow and consequent carry-through of unmacerated, undigested solids from the aeration chamber into the settling tank and premature flow from the settling tank into the chlorination compartment~
Sodium hypochloriate is fed into the disinfectant com-partment by an injection pump 171 in sufficient quantity in relation to the volume of the compartment to provide ~or x minutes of chlorine concentration of the desired value, e~g~ y ppm, even when flow is z times average rate~ The values of x, y and z are chosen to assure destruction of most pathogenic life forms in the liquid effluent~
When liquid in disinfectant compartment 51 (see ~ig-ure 2) reaches the level of weir 63, the liquid overflows into holding compartment 53, The treated liquid is withdraw~ via outlet 93 by gravity or by a pump (no-t shown~.
While a preferred embodiment of the invention has been shown and descrihed, modifications thereof can be made by one skilled in the art without departing from the spirit of the invention~
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Claims (19)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Sewage disposal apparatus comprising an aeration chamber having an inlet, a settling tank adjacent said aeration chamber and having a common wall therewith, said settling tank having a closed top at a lower level than the top of said chamber, a port in said common wall, baffle means extending from said wall on opposite sides of said port separating a portion of the interior of said tank providing a pond, a slush skimmer suction nozzle having its inlet at the top of the pond, a sludge suction nozzle adjacent the bottom of the tank, a distributed outlet located at the interior of said tank outside said pond, first pipe means including a downcomer pipe connected at its upper end to said suction nozzle and at its lower end to a first cross-over pipe extending through said common wall and a first riser connected at its lower end to said cross-over pipe and its upper end to a slush discharge pipe, second pipe means including a second cross-over pipe extending through said common wall connected to said sludge suction nozzle and a second riser connected at its lower end to said second cross-over pipe and at its upper end to a sludge discharge pipe, third pipe means including a third cross-over pipe extending through said common wall connected to said distributed outlet and a standpipe connected at its lower end to said third cross-over pipe and at its upper end to a downcomer discharging to a disinfectant chamber, said first and second risers and standpipe and downcomer being located in said aeration chamber.
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2. Apparatus according to claim 1, the peak of the connection between the standpipe and downcomer being located near the center of the upper part of the aeration chamber.
3. Apparatus according to claim 2 said baffle means being pinched in at its top providing the pond with a smaller top than bottom, said skimmer being located near the center of the top of the pond.
4. Apparatus according to claim 3, including a vent pipe located directly above said skimmer suction nozzle.
5. Apparatus according to claim 1 or 2, said connection between the standpipe and downcomer being vented to the aeration chamber.
6. Sewage disposal apparatus comprising an aeration chamber having a sewage inlet, a settling tank having a closed top so that it can operate flooded with a certain head, the top of said aeration chamber being higher than said top of the settling tank so that the sewage level in the aeration chamber can be higher than the top of the settling tank to create such a head, said settling tank having an influent inlet being connected to said aeration chamber at a level below the top of the settling tank, said settling tank having an outlet, baffle means separating a pond in said settling tank from the rest of the tank, said settling tank having an inlet to said pond, skimmer means having an inlet at the top of said pond, said baffle means having a smaller horizontal cross-sectional area at its top adjacent the skimmer inlet than at a lower level adjacent said settling tank inlet.
7. A sewage disposal apparatus as claimed in claim 6 further comprising piping means connecting said settling tank with a chlorination chamber, said piping means having an elbow above the liquid level of said aeration chamber and a vent line extending off said elbow, said vent line being substantially in the geometric center of said aeration chamber above the highest level of liquid in said aeration chamber to avoid siphoning of liquid from said settling tank to said chlorination chamber.
8. A sewage disposal apparatus as claimed in claim 6 further comprising a sludge suction nozzle adjacent the bottom of the tank, a distributed outlet located at the interior of said tank outside said pond, first pipe means including a downcomer pipe connected at its upper end to said suction nozzle and at its lower end to a first cross-over pipe extending through said common wall and a first riser connected at its lower end to said cross-over pipe and its upper end to a slush discharge pipe, second pipe means including a second cross-over pipe extending through said common wall connected to said sludge suction nozzle and a second riser connected at its lower end to said second cross-over pipe and at its upper end to a sludge discharge pipe, third pipe means including a third cross-over pipe extending through said common wall connected to said distributed outlet and a standpipe connected at its lower end to said third cross-over pipe and at its upper end to a downcomer discharging to a disinfectant chamber, said first and second risers and standpipe and downcomer being located in said aeration chamber.
9. Apparatus according to claim 8, the peak of the connection between the standpipe and downcomer being located near the center of the upper part of the aeration chamber.
10. Apparatus according to claim 8 or 9 t wherein said baffle means is pinched in at its top providing the pond with a smaller top than bottom, said skimmer being located near the center of the top of the pond.
11. Apparatus according to claim 8, further comprising a vent pipe located directly above said skimmer suction nozzle.
12. Apparatus according to claim 8 or 9, wherein said connection between the standpipe and downcomer is vented to the aeration chamber.
13. Apparatus according to claim 6, wherein the upper part of said standpipe means is vented to said aeration chamber.
14. Apparatus according to claim 6, wherein said settling tank has a baffle means therein defining a pond, said skimmer means inlet being near the center of said pond, said pond having a smaller cross-sectional area at the top thereof than at the bottom thereof.
15. Apparatus according to claim 6, wherein said apparatus includes skimmer means having an inlet at the top of said settling tank, said settling tank having a vent above said skimmer communication with said aeration chamber.
16. Apparatus according to claim 15, wherein said apparatus includes a baffle means in said settling tank defining a pond, and said baffle means includes an upper portion of inverted truncated pyramidal shape.
17. Apparatus according to claim 16, the lower portion of said baffle means having vertical sides.
18. Apparatus according to claim 8, wherein said settling tank has a vent in its top directly above said skimmer means inlet.
19. Sewage disposal apparatus comprising an aeration chamber having a sewage inlet, a settling tank having a closed top so that it can operate flooded with a certain head, the top of said aeration chamber being higher than said top of the settling tank so that the sewage level in the aeration chamber can be higher than the top of the settling tank to create such a head, said settling tank having an influent inlet being connected to said aeration chamber at a level below the top of the settling tank, said settling tank having an outlet, a chlorination chamber in said settling tank, and piping means connecting said settling tank with said chlorination chamber, said piping means having an elbow above the liquid level of said aeration chamber and a vent line extending off said elbow, said vent line being substantially in the geometric center of said aeration chamber above the highest level of liquid in said aeration chamber to avoid siphoning of liquid from said settling tank to said chlorination chamber.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/082,964 US4253957A (en) | 1979-10-09 | 1979-10-09 | Marine sewage disposal |
| US082,964 | 1979-10-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1131813A true CA1131813A (en) | 1982-09-14 |
Family
ID=22174567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA351,571A Expired CA1131813A (en) | 1979-10-09 | 1980-05-09 | Marine sewage disposal |
Country Status (23)
| Country | Link |
|---|---|
| US (1) | US4253957A (en) |
| JP (1) | JPS5660687A (en) |
| KR (1) | KR830003374A (en) |
| AR (1) | AR222243A1 (en) |
| AU (1) | AU521206B2 (en) |
| BE (1) | BE883582A (en) |
| BR (1) | BR8004475A (en) |
| CA (1) | CA1131813A (en) |
| DE (1) | DE3037861A1 (en) |
| DK (1) | DK325180A (en) |
| ES (1) | ES487890A0 (en) |
| FR (1) | FR2467267A1 (en) |
| GB (1) | GB2059936B (en) |
| GR (1) | GR64715B (en) |
| IE (1) | IE50201B1 (en) |
| IT (1) | IT1127524B (en) |
| LU (1) | LU82489A1 (en) |
| NL (1) | NL8003403A (en) |
| NO (1) | NO802216L (en) |
| NZ (1) | NZ195076A (en) |
| PT (1) | PT71688B (en) |
| SE (1) | SE8005378L (en) |
| ZA (1) | ZA805934B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4391703A (en) * | 1980-08-05 | 1983-07-05 | Red Fox Industries, Inc. | Marine sewage treatment with biological filter |
| DE3222176A1 (en) * | 1982-06-12 | 1983-12-15 | Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel | Method and device for de-oiling bilge water |
| CS239007B1 (en) * | 1983-07-04 | 1985-12-16 | Vladimir Mackrle | Method of nitrogen substances containing biological activation sewage treatment and equipment for application of this method |
| GB2193955B (en) * | 1986-08-18 | 1991-02-06 | Walter Mansel James | Separator |
| US4999103A (en) * | 1987-12-11 | 1991-03-12 | Bogart John D | Decontamination apparatus mobile water |
| DE19926682C1 (en) * | 1999-06-11 | 2000-12-07 | Reiner Wenzel | Waste water collection system has water collection shaft sunk in ground coupled to above ground connection fitting for coupling to water collection vehicle at spaced location |
| DE10112357A1 (en) * | 2001-03-13 | 2002-10-02 | Siemens Axiva Gmbh & Co Kg | Process and device for biological wastewater treatment with integrated sludge (biomass) - separation by sedimentation under pressure |
| FI20010628A (en) * | 2001-03-27 | 2002-09-28 | Evac Int Oy | Device for cleaning waste |
| FI116792B (en) * | 2001-12-03 | 2006-02-28 | Evac Int Oy | Wastewater treatment plant |
| CA2425350A1 (en) * | 2003-04-14 | 2004-10-14 | Peter Alex | Container shut-off valve with venting |
| CA2441991C (en) * | 2003-09-19 | 2012-11-13 | Ronald R. Chisholm | Fluid transfer apparatus |
| US20050115606A1 (en) * | 2003-10-01 | 2005-06-02 | Chisholm Ronald R. | System for effecting liquid transfer from an elevated supply container |
| US7300575B2 (en) * | 2004-06-16 | 2007-11-27 | Heritage Crystal Clean, Llc | Portable filter system |
| US20080083674A1 (en) * | 2006-10-06 | 2008-04-10 | Cormier Murphy J | Apparatus for and Method of Dosing a Wastewater Treatment System |
| DE102008046913B4 (en) * | 2008-09-12 | 2010-08-26 | Hamann Ag | Apparatus for wastewater treatment |
| RU173044U1 (en) * | 2016-08-23 | 2017-08-08 | Российская Федерация в лице Общество с ограниченной ответственностью "Научно-Промышленное Объединение "ОРТЕХ-ЖКХ" | DEVELOPMENT OF BIOLOGICAL WASTE WATER TREATMENT |
| RU209119U9 (en) * | 2021-08-12 | 2022-03-24 | Федеральное государственное бюджетное научное учреждение "Всероссийский научно-исследовательский институт орошаемого земледелия" (ФГБНУ ВНИИОЗ) | WASTE WATER TREATMENT DEVICE |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2348122A (en) * | 1940-05-29 | 1944-05-02 | Infilco Inc | Liquid treatment |
| US2413838A (en) * | 1940-08-02 | 1947-01-07 | Edward B Mallory | Waste purification apparatus having superposed aerating and clarifying chambers |
| US2629689A (en) * | 1948-04-12 | 1953-02-24 | Infilco Inc | Water purifying and degasifying apparatus and process |
| US2709680A (en) * | 1951-06-02 | 1955-05-31 | Youngstown Welding & Engineeri | Sewage disposal apparatus |
| US2930393A (en) * | 1955-01-31 | 1960-03-29 | Charles H Starling | Rate of flow controller |
| US2901114A (en) * | 1957-04-17 | 1959-08-25 | Mcphee | Sewage treatment apparatus |
| US3051315A (en) * | 1957-08-01 | 1962-08-28 | Carl F Boester | Sewage treatment apparatus |
| US3239438A (en) * | 1962-05-21 | 1966-03-08 | Ex Cell O Corp | Method and apparatus for purifying electrolyte used in electro-chemical machining |
| US3204768A (en) * | 1963-01-21 | 1965-09-07 | William H Daniel | Sewage treatment apparatus |
| US3275149A (en) * | 1963-12-05 | 1966-09-27 | Fmc Corp | Apparatus for sewage pretreatment for outfall disposal |
| US3327855A (en) * | 1964-06-12 | 1967-06-27 | Gen Electric | Home wastewater treating unit |
| US3335865A (en) * | 1964-08-18 | 1967-08-15 | Crane Co | System for sewage treatment |
| US3347784A (en) * | 1965-05-05 | 1967-10-17 | Fmc Corp | Sewage treatment process and apparatus |
| US3419146A (en) * | 1967-10-16 | 1968-12-31 | Koulovatos James | Sewerage treatment plant |
| US3415381A (en) * | 1967-12-29 | 1968-12-10 | Paul M. Thayer | Sewage treatment plants |
| US3535234A (en) * | 1968-02-20 | 1970-10-20 | Pall Corp | Sewage treatment process and apparatus |
| US3497064A (en) * | 1969-04-17 | 1970-02-24 | Water Pollution Controls Inc | Aerobic waste system with pneumatic ejection and chlorination |
| US3709363A (en) * | 1970-10-19 | 1973-01-09 | Bio2 Syst Inc | Extended aeration, activated sludge plant |
| US3733264A (en) * | 1971-03-18 | 1973-05-15 | Air Prod & Chem | Activated sludge sewage treatment process and system |
| US3951816A (en) * | 1971-06-28 | 1976-04-20 | Burmah Oil And Gas Company | Clarification tank |
| US3764011A (en) * | 1971-12-16 | 1973-10-09 | D Owens | Sewage treatment apparatus |
| US3879285A (en) * | 1972-04-05 | 1975-04-22 | Coate Burial Vault Inc | Aerobic sewage treatment system |
| US3870634A (en) * | 1972-06-01 | 1975-03-11 | Frank Humphrey | Marine sewage treatment system for water craft |
| US4081365A (en) * | 1974-01-02 | 1978-03-28 | Filters International Inc. | Methods for use in water purification particularly sewage treatments |
| GB1465003A (en) * | 1974-03-27 | 1977-02-16 | Hamworthy Engineering | Sewage treatment apparatus particularly for marine applications |
| US3951817A (en) * | 1974-06-26 | 1976-04-20 | Jet Aeration Company | Sewage treatment tank and tube settler |
| US4104167A (en) * | 1976-10-08 | 1978-08-01 | Ferdinand Besik | Apparatus for purifying waste waters |
| US4176068A (en) * | 1977-05-10 | 1979-11-27 | Ankersmit Hendrik J | Method for the separation from each other of the components of a mixture of water, oil and dirt (sludge) as well as apparatus for performing said method |
-
1979
- 1979-10-09 US US06/082,964 patent/US4253957A/en not_active Expired - Lifetime
-
1980
- 1980-01-21 ES ES487890A patent/ES487890A0/en active Granted
- 1980-02-21 GB GB8005856A patent/GB2059936B/en not_active Expired
- 1980-03-05 GR GR61357A patent/GR64715B/en unknown
- 1980-05-09 CA CA351,571A patent/CA1131813A/en not_active Expired
- 1980-05-28 LU LU82489A patent/LU82489A1/en unknown
- 1980-05-29 AU AU58877/80A patent/AU521206B2/en not_active Ceased
- 1980-05-30 JP JP7266780A patent/JPS5660687A/en active Pending
- 1980-05-30 BE BE0/200848A patent/BE883582A/en not_active IP Right Cessation
- 1980-06-11 NL NL8003403A patent/NL8003403A/en not_active Application Discontinuation
- 1980-07-07 KR KR1019800002690A patent/KR830003374A/en unknown
- 1980-07-08 IT IT4919380A patent/IT1127524B/en active
- 1980-07-18 BR BR8004475A patent/BR8004475A/en unknown
- 1980-07-23 NO NO802216A patent/NO802216L/en unknown
- 1980-07-25 SE SE8005378A patent/SE8005378L/en not_active Application Discontinuation
- 1980-07-28 DK DK325180A patent/DK325180A/en not_active Application Discontinuation
- 1980-08-08 AR AR28210480A patent/AR222243A1/en active
- 1980-08-11 PT PT7168880A patent/PT71688B/en unknown
- 1980-08-25 FR FR8018456A patent/FR2467267A1/en active Granted
- 1980-09-22 IE IE1965/80A patent/IE50201B1/en unknown
- 1980-09-24 ZA ZA00805934A patent/ZA805934B/en unknown
- 1980-09-29 NZ NZ195076A patent/NZ195076A/en unknown
- 1980-10-07 DE DE19803037861 patent/DE3037861A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR2467267A1 (en) | 1981-04-17 |
| BR8004475A (en) | 1981-04-28 |
| DE3037861A1 (en) | 1981-04-23 |
| GB2059936B (en) | 1983-03-30 |
| KR830003374A (en) | 1983-06-20 |
| DK325180A (en) | 1981-04-10 |
| NZ195076A (en) | 1984-02-03 |
| ZA805934B (en) | 1981-11-25 |
| FR2467267B1 (en) | 1984-05-18 |
| PT71688B (en) | 1981-06-26 |
| BE883582A (en) | 1980-12-01 |
| AR222243A1 (en) | 1981-04-30 |
| IT1127524B (en) | 1986-05-21 |
| JPS5660687A (en) | 1981-05-25 |
| AU5887780A (en) | 1981-04-16 |
| GB2059936A (en) | 1981-04-29 |
| US4253957A (en) | 1981-03-03 |
| IE801965L (en) | 1981-04-09 |
| LU82489A1 (en) | 1982-01-20 |
| AU521206B2 (en) | 1982-03-18 |
| ES8100227A1 (en) | 1980-11-01 |
| NO802216L (en) | 1981-04-10 |
| SE8005378L (en) | 1981-04-10 |
| IE50201B1 (en) | 1986-03-05 |
| ES487890A0 (en) | 1980-11-01 |
| NL8003403A (en) | 1981-04-13 |
| PT71688A (en) | 1980-09-01 |
| IT8049193A0 (en) | 1980-07-08 |
| GR64715B (en) | 1980-05-21 |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |